From 6e23ec0ba92d426c77a73a9ccab16346e5e0ef49 Mon Sep 17 00:00:00 2001
From: Hangyu Hua <hbh25y@gmail.com>
Date: Fri, 23 Sep 2022 10:00:46 +0800
Subject: [PATCH] net: sched: act_ct: fix possible refcount leak in
 tcf_ct_init()
Git-commit: 6e23ec0ba92d426c77a73a9ccab16346e5e0ef49
Patch-mainline: v6.0
References: bsc#1207361

nf_ct_put need to be called to put the refcount got by tcf_ct_fill_params
to avoid possible refcount leak when tcf_ct_flow_table_get fails.

Fixes: c34b961a2492 ("net/sched: act_ct: Create nf flow table per zone")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Link: https://lore.kernel.org/r/20220923020046.8021-1-hbh25y@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jiri Wiesner <jwiesner@suse.de>
---
 net/sched/act_ct.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c
index d55afb8d14be..5950974ae8f6 100644
--- a/net/sched/act_ct.c
+++ b/net/sched/act_ct.c
@@ -1307,7 +1307,7 @@ static int tcf_ct_init(struct net *net, struct nlattr *nla,
 
 	err = tcf_ct_flow_table_get(params);
 	if (err)
-		goto cleanup;
+		goto cleanup_params;
 
 	spin_lock_bh(&c->tcf_lock);
 	goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch);
@@ -1409,6 +1409,9 @@ static int tcf_ct_init(struct net *net, struct nlattr *nla,
 
 	return res;
 
+cleanup_params:
+	if (params->tmpl)
+		nf_ct_put(params->tmpl);
 cleanup:
 	if (goto_ch)
 		tcf_chain_put_by_act(goto_ch);
-- 
2.35.3